CN106130840B - A kind of fixation, mobile broadband fusion access planar network architecture - Google Patents

A kind of fixation, mobile broadband fusion access planar network architecture Download PDF

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Publication number
CN106130840B
CN106130840B CN201610559361.9A CN201610559361A CN106130840B CN 106130840 B CN106130840 B CN 106130840B CN 201610559361 A CN201610559361 A CN 201610559361A CN 106130840 B CN106130840 B CN 106130840B
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China
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loop
access
onu
pon
central office
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CN106130840A (en
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张新全
程容
何炜
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Wuhan Research Institute of Posts and Telecommunications Co Ltd
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Wuhan Research Institute of Posts and Telecommunications Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/2854—Wide area networks, e.g. public data networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J14/00—Optical multiplex systems
    • H04J14/02—Wavelength-division multiplex systems
    • H04J14/0227—Operation, administration, maintenance or provisioning [OAMP] of WDM networks, e.g. media access, routing or wavelength allocation
    • H04J14/0228—Wavelength allocation for communications one-to-all, e.g. broadcasting wavelengths
    • H04J14/023—Wavelength allocation for communications one-to-all, e.g. broadcasting wavelengths in WDM passive optical networks [WDM-PON]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J14/00—Optical multiplex systems
    • H04J14/02—Wavelength-division multiplex systems
    • H04J14/0278—WDM optical network architectures
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/2854—Wide area networks, e.g. public data networks
    • H04L12/2856—Access arrangements, e.g. Internet access
    • H04L12/2869—Operational details of access network equipments
    • H04L12/2878—Access multiplexer, e.g. DSLAM
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0062—Network aspects
    • H04Q11/0067—Provisions for optical access or distribution networks, e.g. Gigabit Ethernet Passive Optical Network (GE-PON), ATM-based Passive Optical Network (A-PON), PON-Ring

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Optical Communication System (AREA)
  • Small-Scale Networks (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The invention discloses a kind of fixations, mobile broadband fusion access planar network architecture, including central office, multiple WDM loops and PON AM access module；Wherein, central office includes several first line of a couplet units and resource pool, and each WDM loop includes a loop local side unit and multiple loop far-end units；PON AM access module includes ODN and ONU；First line of a couplet unit is connected to core net, resource pool is based on NFV virtual technology OLT, CPE, BAS and BBU function, and each WDM loop realizes the optical transport between the PON AM access module and direct-connected base station and big customer and central office on the loop far-end unit；ONU is connect with the base station and RRU of fixed broadband user or mobile broadband, is accessed network；Optical transport is carried out by ODN between loop far-end unit and ONU.The present invention realizes that fixed broadband, the fusion of mobile broadband are shared in terms of Internet resources, gives full play to the advantage of PON technology low cost multiple access access, realizes the transmission of low cost, large capacity, high-speed and high survivability.

Description

A kind of fixation, mobile broadband fusion access planar network architecture
Technical field
The present invention relates to metropolitan area access fields, and in particular to a kind of fixation, mobile broadband fusion access planar network architecture.
Background technique
In the case where the sustainable development of internet, cloud computing and Internet of Things requires, " broadband China strategy " is by fixed broadband and shifting Dynamic broadband access rises to status identical as the infrastructure such as water, electricity, gas.With the continuous universal and function liter of intelligent terminal The all business operation of grade and operator is promoted so that fixed network and mobile collaboration could more preferably be met the needs of users and uses body It tests.
For a long time, fixed broadband and mobile broadband are mutually indepedent, two network each self-forming " funnel-shaped " framework (Fig. 1 It is shown).Although realizing fixed broadband, mobile broadband service fusion by modes such as " set meals " in customer service level at present, But be still separation in profound both network levels, and the segmentation of this network directly result in carrier network build dimension at This raising, customer service experience are limited.
PON (Passive Optical Network, passive optical network) is intelligent acess technology, is fixed broadband access Main means, the characteristic with the high and low cost of bandwidth efficiency but sacrifices transmission performance and survivability to a certain extent Energy.
It is convenient that mobile broadband has the characteristics that access, but rate are higher, and rate is lower.MBH the and MFH master of mobile broadband To use Fibre Optical Communication Technology, wherein MBH is generally PTN (Packet Transport Network, Packet Transport Network), IP RAN (IP Radio Access Network, IPization wireless access network)；MFH generally uses dark fibre.With mobile communication to 4G, 5G development, it is necessary to largely small base station, the main mode of small base station deployment are C-RAN (as shown in Figure 2) to high-density deployment, It is made of BBU (baseband processing unit) and RRU (radio frequency remoto module), and highdensity largely small base stations of disposing must improve Operation cost, therefore there is an urgent need to low costs, the MFH solution of high-speed for operator.
Summary of the invention
The technical problem to be solved by the present invention is to the development trends in order to adapt to fixed mobile broadband fusion, change existing There is fixed, mobile broadband to access isolated situation, constructs a kind of effective fixation, the problem of Mobile Convergence accesses planar network architecture.
In order to solve the above-mentioned technical problem, the technical scheme adopted by the invention is that providing a kind of fixation, mobile broadband melts Splice grafting enters planar network architecture, including central office, multiple WDM loops and PON AM access module；Wherein, the central office includes several First line of a couplet unit and resource pool, each WDM loop include the loop local side unit and multiple rings for being located at central office Great distance end unit；The PON AM access module includes ODN and ONU；
The first line of a couplet unit is connected to core net；The resource pool is based on NFV virtual technology OLT, CPE, BAS and BBU function Energy；Each WDM loop realizes the PON AM access module and the direct-connected base station on the loop far-end unit Optical transport between big customer and central office；
The ONU is connect with the base station or RRU of fixed broadband user and mobile broadband, is accessed network；The loop Optical transport is carried out by the ODN between far-end unit and the ONU.
In the above scheme, the resource pool includes interchanger, server and memory.
In the above scheme, for fixed broadband user, network is accessed using FTTx technology by the ONU.
In the above scheme, the fixed broadband user includes optical fiber, copper wire and ether with the ONU mode connecting Net.
In the above scheme, for mobile broadband, it is divided into following two situation access network:
When base station deployment is C-RAN framework, the RRU of C-RAN framework is by connecting access network with ONU, to realize shifting Dynamic forward pass；
When base station deployment is non-C-RAN framework, base station is by connecting access network with ONU, to realize mobile retransmission.
In the above scheme, the BBU in the C-RAN framework in the central office based on NFV technology with virtual BBU's Mode is realized.
Compared with prior art, the present invention having the advantage that
(1) WDM loop and PON are combined into the access demand to meet fixed broadband and mobile broadband, not only kept PON technology it is simple, give full play to the advantage of its inexpensive multiple access access, and will not be because of the high request of transmission range and capacity And PON technology is caused to complicate in terms of dispersion compensation, device performance, Wavelength tunable, modulation format, DSP, to keep away Exempt from cost increase；
(2) WDM loop and PON are combined, takes full advantage of the transmission advantage of WDM loop, realize great Rong The transmission and good OAM ability of amount, high-speed and high survivability, and according to need such as the distances, rate, capacity of input field Progress appropriateness is asked to simplify to reduce cost；
(3) it using NFV technology building fixed-bandwidth, the CO node of mobile bandwidth fusion access net, realizes fixed-bandwidth, move Dynamic fusion of the bandwidth in process resource is shared, not only reduces hardware cost and service efficiency, but also promotes the dynamic of network throughput State property and adaptability to new business；
(4) operator's fixed broadband, mobile broadband service fusion is made no longer only to rest on format surfaces such as " set meals ", but Really fusion is realized in terms of Internet resources；
(5) meet the large capacity of network flattening, lack institute, office trend, complex process function is focused on into a small amount of CO node, It realizes the DCization of network edge, and promotes the coverage area of CO node by wavelength-division multiplex technique.
Detailed description of the invention
Fig. 1 is " funnel-shaped " configuration diagram of fixed broadband, each self-forming of mobile broadband；
Fig. 2 is C-RAN configuration diagram；
Fig. 3 is a kind of fixation provided by the invention, mobile broadband fusion access planar network architecture schematic diagram.
Specific embodiment
NFV (Network Function Virtualization, network function virtualization) is by ETSI (European Telecommunications Standards Institute, European Telecommunication Standardization Association) it proposes and standardizes, it is intended to the greatest extent may be used Network hardware platform (resource pool) can be used as using common hardware (server, memory, interchanger etc.), function is as far as possible by software It realizes, to eliminate dependence of the function to hardware, network is virtualized, finally promote network to build dimension cost and substantially drop The new business requirement that low and network function dynamic adaptable continuously emerges.As it can be seen that NFV is that fixed network and mobile network are melted Conjunction creates advantage, so that realize on a general hardware platform while meeting fixed network and mobile network's demand Function system is possibly realized, so, for access net, the fusion that solid, transposing enters can be realized by NFV technology.
But fixed, mobile broadband objectively have the characteristics that it is respective, in cost, transmission range, bandwidth demand, existence Property, OAM (Operation Administration and Maintenance, operation, management, maintenance) ability etc. have one Determine difference, merged by force if ignoring these differences, cannot not only reduce cost, improves rate, and may lose Fixed, the original advantage of mobile broadband.For example, industry it is expected that always PON can undertake solid wide access, MBH/MFH simultaneously, but this will Performance in terms of causing PON that must be continuously increased transmission range, rate, capacity, so that increasingly complicated (such as color of PON technology Dissipate compensation, complex modulation format, coherent reception etc.), cost constantly rises, and has violated PON both simple, low cost Original intention, and be difficult to take on the important task of mobile forward pass, passback, it loses more than gain.
Therefore, the present invention fully take into account coverage area, transmission quality, link condition, survivability, process resource, OAM, The difference of multiple dimensions such as cost of implementation is realized that fixed, mobile broadband process resource fusion is shared using NFV technology, is used WDM loop and PON construct effective fixation, mobile broadband fusion in conjunction with the access difference to balance fixed, mobile broadband Access planar network architecture.
The present invention is described in detail with specific embodiment with reference to the accompanying drawings of the specification.
As shown in figure 3, a kind of fixation provided by the present invention, mobile broadband fusion access planar network architecture, are roughly divided into CO 30 3 (Central Office, central office) 10, multiple WDM loops 20 and PON AM access module parts, wherein in Heart office 10 includes several first line of a couplet units 11 and resource pool 12 (such as interchanger, server and memory hardware resource)；Each wave Dividing multiplexing loop 20 includes the loop local side unit 21 and multiple loop far-end units 22 for being located at central office 10；PON access Module 30 includes ODN (Optical Distribution Network) 31 and ONU (optical network unit) 32；
First line of a couplet unit 11 is connected to core net；Resource pool 12 is based on NFV virtual technology OLT (optical line Terminal, optical line terminal, CPE (Customer Premise Equipment, customer terminal equipment), PE (Provider Edge, provider edge), BBU (Building Baseband Unit, indoor baseband processing unit), BAS Functions such as (Broadband Access Server, BAS Broadband Access Servers), i.e. vOLT (virtual OLT), vCPE (virtual CPE), The functions such as vPE (virtual PE), vBBU (virtual BBU), vBAS (virtual BAS), realize loop far-end unit 22 (vOLT) and The sophisticated functions of ONU32 (vCPE) merge fixed, mobile broadband process resource can shared, to meet large capacity, few institute, office Demand for development；PON AM access module 30, the direct-connected base on loop far-end unit 22 are carried out by each WDM loop 20 The optical transport stood between big customer and central office 10, this ring topology of WDM loop 20 are conducive to carry out as needed Optical path protection, improves corresponding Survival properties.
Each loop far-end unit 22 only has most basic PON function, such as PHY (Physical Layer, physics Layer) layer function (such as burst reception) is here light-receiving, light transmission, other sophisticated functions are concentrated to CO all with the side vOLT Formula is realized；ONU32 only has basic access function, the mobile communication base station or RRU with fixed broadband user and mobile broadband Connection, is accessed network, provides broadband services for it, the sophisticated functions of CPE is concentrated to CO and is realized in a manner of vCPE；Loop Optical transport is carried out by ODN31 between far-end unit 22 and ONU32.
In the present invention, for fixed broadband user, network is accessed using FTTx technology by ONU32, is connect with ONU32 Mode include optical fiber, copper wire, Ethernet etc.；
For mobile broadband, it is divided into following two situation access network:
When base station deployment is C-RAN framework, the RRU of C-RAN framework is by connecting access network with ONU32, to realize Forward pass is moved, the BBU in C-RAN framework is then realized in a manner of vBBU (virtual BBU) in CO.
When base station deployment is non-C-RAN framework, base station is by connecting access network with ONU32, to realize mobile retransmission.
In addition, according to the practical applications needs such as bandwidth, position, big customer's special line of fixed broadband, the RRU of mobile broadband or Base station can directly be connected with corresponding loop far-end unit 22, to access network.
In the present invention, each WDM loop 20 can be according to transmission capacity and apart from selection dense wave division multipurpose or slightly Wavelength-division multiplex carries out optical transport, and the function of WDM loop transmission is carried out according to application requirements such as loop transfer distance, rates (wavelength-division multiplex technique relative to long distance line) can be simplified, to reduce cost, realize high quality, large capacity and high reliability Transmission.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art Mind and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies Within, then the present invention is also intended to include these modifications and variations.

Claims (5)

1. a kind of fixation, mobile broadband fusion access planar network architecture, which is characterized in that including central office, multiple WDM loops With PON AM access module；Wherein, the central office includes several first line of a couplet units and resource pool, each WDM loop packet Include the loop local side unit and multiple loop far-end units for being located at central office；The PON AM access module includes ODN and ONU；
The first line of a couplet unit is connected to core net；The resource pool is based on NFV virtual technology OLT, CPE, BAS and BBU function；Often A WDM loop realizes the PON AM access module and direct-connected base station and bus on the loop far-end unit Optical transport between family and central office, each loop far-end unit only has the light-receiving of PON, optical sending function, other Function is realized in a manner of virtual OLT in resource pool；
The ONU only has access function, connect with the base station and RRU of fixed broadband user or mobile broadband, is accessed net Network, CPE function are realized in a manner of virtual CPE by resource pool；By described between the loop far-end unit and the ONU ODN carries out optical transport；
For mobile broadband, it is divided into following two situation access network:
When base station deployment is C-RAN framework, the RRU of C-RAN framework is by connecting access network with ONU, thus before realizing movement It passes, the BBU in C-RAN framework is then realized in a manner of virtual BBU in resource pool；
When base station deployment is non-C-RAN framework, base station is by connecting access network with ONU, to realize mobile retransmission.
2. framework as described in claim 1, which is characterized in that the resource pool includes interchanger, server and memory.
3. framework as described in claim 1, which is characterized in that for fixed broadband user, use FTTx skill by the ONU Art accesses network.
4. framework as claimed in claim 3, which is characterized in that the mode packet that the fixed broadband user connect with the ONU Include optical fiber, copper wire and Ethernet.
5. framework as described in claim 1, which is characterized in that the BBU in the C-RAN framework is based in the central office NFV technology is realized in a manner of virtual BBU.
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CN106358202A (en) * 2016-10-13 2017-01-25 北京邮电大学 Improved C-RAN network architecture and resource dispatching method
JP6636971B2 (en) * 2017-02-22 2020-01-29 日本電信電話株式会社 Communication method and communication system
CN107509128B (en) * 2017-08-16 2020-04-07 中国联合网络通信集团有限公司 Method and system for accessing core network
CN109962831B (en) * 2017-12-14 2021-08-17 中国电信股份有限公司 Virtual client terminal device, router, storage medium, and communication method
CN108111931B (en) * 2017-12-15 2021-07-16 国网辽宁省电力有限公司 Virtual resource slice management method and device for power optical fiber access network
CN112135293B (en) 2019-06-24 2022-05-31 华为技术有限公司 Method for accessing mobile core network through fixed access equipment
CN110677857A (en) * 2019-09-29 2020-01-10 武汉邮电科学研究院有限公司 Residence network information infrastructure sharing architecture
CN111865419B (en) * 2020-07-07 2021-09-28 东南大学 5G-oriented intelligent optical access network local side cloud system based on building block type architecture
CN113163277B (en) * 2021-06-23 2021-09-10 武汉长光科技有限公司 Optical network unit bandwidth management method and device, electronic equipment and storage medium
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